package com.itboy.framework.config;

import com.itboy.framework.security.filter.JwtAuthenticationTokenFilter;
import com.itboy.framework.security.handle.AuthenticationEntryPointImpl;
import com.itboy.framework.security.handle.LogoutSuccessHandlerImpl;
import de.codecentric.boot.admin.server.config.AdminServerProperties;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Bean;
import org.springframework.http.HttpMethod;
import org.springframework.security.authentication.AuthenticationManager;
import org.springframework.security.config.annotation.authentication.builders.AuthenticationManagerBuilder;
import org.springframework.security.config.annotation.method.configuration.EnableGlobalMethodSecurity;
import org.springframework.security.config.annotation.web.builders.HttpSecurity;
import org.springframework.security.config.annotation.web.builders.WebSecurity;
import org.springframework.security.config.annotation.web.configuration.WebSecurityConfigurerAdapter;
import org.springframework.security.config.http.SessionCreationPolicy;
import org.springframework.security.core.userdetails.UserDetailsService;
import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder;
import org.springframework.security.web.authentication.UsernamePasswordAuthenticationFilter;
import org.springframework.security.web.authentication.logout.LogoutFilter;
import org.springframework.web.filter.CorsFilter;

/**
 * spring security配置
 *
 * @author itboy
 */
@EnableGlobalMethodSecurity(prePostEnabled = true, securedEnabled = true)
public class SecurityConfig extends WebSecurityConfigurerAdapter {
	/**
	 * 自定义用户认证逻辑
	 */
	@Autowired
	private UserDetailsService userDetailsService;

	/**
	 * 认证失败处理类
	 */
	@Autowired
	private AuthenticationEntryPointImpl unauthorizedHandler;

	/**
	 * 退出处理类
	 */
	@Autowired
	private LogoutSuccessHandlerImpl logoutSuccessHandler;

	/**
	 * token认证过滤器
	 */
	@Autowired
	private JwtAuthenticationTokenFilter authenticationTokenFilter;

	/**
	 * 跨域过滤器
	 */
	@Autowired
	private CorsFilter corsFilter;

	@Autowired
	private AdminServerProperties adminServerProperties;

	/**
	 * 解决 无法直接注入 AuthenticationManager
	 *
	 * @return
	 * @throws Exception
	 */
	@Bean
	@Override
	public AuthenticationManager authenticationManagerBean() throws Exception {
		return super.authenticationManagerBean();
	}

	@Override
	public void configure(WebSecurity web){
		//解决静态资源被拦截的问题
		web.ignoring().antMatchers("/*.html", "/css/**","/img/**","/js/**","/*.ico","/index/**",
			"/search/**","/item/**","/login/**","/cart/**");
	}

		/**
		 * anyRequest          |   匹配所有请求路径
		 * access              |   SpringEl表达式结果为true时可以访问
		 * anonymous           |   匿名可以访问
		 * denyAll             |   用户不能访问
		 * fullyAuthenticated  |   用户完全认证可以访问（非remember-me下自动登录）
		 * hasAnyAuthority     |   如果有参数，参数表示权限，则其中任何一个权限可以访问
		 * hasAnyRole          |   如果有参数，参数表示角色，则其中任何一个角色可以访问
		 * hasAuthority        |   如果有参数，参数表示权限，则其权限可以访问
		 * hasIpAddress        |   如果有参数，参数表示IP地址，如果用户IP和参数匹配，则可以访问
		 * hasRole             |   如果有参数，参数表示角色，则其角色可以访问
		 * permitAll           |   用户可以任意访问
		 * rememberMe          |   允许通过remember-me登录的用户访问
		 * authenticated       |   用户登录后可访问
		 */
		@Override
		protected void configure (HttpSecurity httpSecurity) throws Exception
		{
			httpSecurity
				// CSRF禁用，因为不使用session
				.csrf().disable()
				// 认证失败处理类
				.exceptionHandling().authenticationEntryPoint(unauthorizedHandler).and()
				// 基于token，所以不需要session
				.sessionManagement().sessionCreationPolicy(SessionCreationPolicy.STATELESS).and()
				// 过滤请求
				.authorizeRequests()
				// 对于登录login 验证码captchaImage 允许匿名访问
				.antMatchers("/login", "/captchaImage").anonymous()
				.antMatchers(
					HttpMethod.GET,
					"/*.html",
					"/**/*.html",
					"/**/*.css",
					"/**/*.js"
				).permitAll()
				.antMatchers("/profile/**").anonymous()
				.antMatchers("/common/download**").anonymous()
				.antMatchers("/common/download/resource**").anonymous()
				.antMatchers("/doc.html").anonymous()
				.antMatchers("/swagger-resources/**").anonymous()
				.antMatchers("/webjars/**").anonymous()
				.antMatchers("/*/api-docs").anonymous()
				.antMatchers("/druid/**").anonymous()
				.antMatchers("/").anonymous()
				/**
				 *
				 */
				.antMatchers("/index.html").anonymous()
				.antMatchers("/search/item/**").anonymous()
				.antMatchers("/search/list.html").anonymous()
				.antMatchers("/web/**").anonymous()

				// Spring Boot Admin Server 的安全配置
				.antMatchers(adminServerProperties.getContextPath()).anonymous()
				.antMatchers(adminServerProperties.getContextPath() + "/**").anonymous()
				// Spring Boot Actuator 的安全配置
				.antMatchers("/actuator").anonymous()
				.antMatchers("/actuator/**").anonymous()
				// 除上面外的所有请求全部需要鉴权认证
				.anyRequest().authenticated()
				.and()
				.headers().frameOptions().disable();
			httpSecurity.logout().logoutUrl("/logout").logoutSuccessHandler(logoutSuccessHandler);
			// 添加JWT filter
			httpSecurity.addFilterBefore(authenticationTokenFilter, UsernamePasswordAuthenticationFilter.class);
			// 添加CORS filter
			httpSecurity.addFilterBefore(corsFilter, JwtAuthenticationTokenFilter.class);
			httpSecurity.addFilterBefore(corsFilter, LogoutFilter.class);
		}


		/**
		 * 强散列哈希加密实现
		 */
		@Bean
		public BCryptPasswordEncoder bCryptPasswordEncoder ()
		{
			return new BCryptPasswordEncoder();
		}

		/**
		 * 身份认证接口
		 */
		@Override
		protected void configure (AuthenticationManagerBuilder auth) throws Exception
		{
			auth.userDetailsService(userDetailsService).passwordEncoder(bCryptPasswordEncoder());
		}
	}
